What is the term for tissue destruction using high-frequency electric current?

The correct term for tissue destruction using high-frequency electric current is "fulguration." This process involves the use of electrical currents to destroy tissue, commonly utilized in medical procedures, especially in dermatology to remove unwanted lesions or growths. Fulguration typically employs a spark gap technique that helps to avoid damaging surrounding tissues, making it a precise method for ablation.

As for the other terms, while "electrodesiccation" also pertains to tissue destruction using electricity, it specifically focuses on drying out tissue rather than broader destruction. "Dermabrasion" is a cosmetic procedure that involves the physical removal of the upper layers of skin, and "chemabrasion" refers to the use of chemical agents to achieve a similar effect. These terms describe different methods rather than the specific high-frequency electric current approach described in the question.